peters



W. RING.

Framer Staff for Grinding Mills.

'Nm 70,266. Patented Oct. 29, 1867.

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WALTER. RING, OF GOSPORT, INDIANA. Letters Patent No. 70,266, datedOctober 29, 1867.

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TO ALL WHOM ITMAY CONCERN:

Be it known that I, WALTER RING, of Gosport, in the county of Owen, andState of Indiana, have invented a new and improved Pivot Gauge-Stall andTram for Millstones; and I dohereby declare that the following is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1 is a side elevation of a millstone with the gauge-staff andtram applied to it.

Figure 2 is a plan of the same.

Figure 3 is a vertical section taken in the line 2: z, figs. 1 and 2.

Figure 4 is a top view of the millstone with the tram removed.

Figure 5 is a plan of an internal part, or a bush in the tram.

Figure 6 is the same with other connected parts.

Similar letters of reference indicate like parts.

This invention relates to a device for gauging and stafling or levellingmillstones accurately, and plumbing the spindle truly, by which thisimportant part of a millers work may be performed readily and perfectlyby any one, even the most unskillful, with absolute certainty. Thisdevice is an adjustable pivot-gauge staff and tram by which the spindlemaybe easily set perfectly true, and the burr-stone taken out of windand made level ready for dressing.

A represents either an upper or lower millstone, provided with a bail,a, and a proof or temporary spindle, b, by which an upper stone orrunner is gauged and tranimed, as seen in figs. 3 and 4. Theproof-spindle b is secured in place temporarily by the driver orspider-frame e, fitted in and fastened to the face of the stone byscrews d d, which pass down through the eye of the stone to the bottom,when theyserew into a barrel-plate, 2, let into the stone. The stonebeing thus prepared for .tramming, is turned up level, and thegauge-staif o1 tram applied, as shown in fig. 1. The tram consists of aniron plate or staff, equalin length to the diameter of the stone, andplaned perfectly true on the face, to be used as a proof-staif, assubsequently explained. 13 B is the iron proof-staff, to the face ofwhich is fitted and fastened by screw-bolts ffffa wooden stafi, C C,also made perfectly true on the face, next the stone. On the top of theiron stafl'B B is bolted a central iron arch, D, by screws gg. In thecrown of the arch is a sleeve-box, it, in the lower part of which isfitted a pivot-pin, 2', projecting underneath, which centres on-theupper end or point of the spindle I). In the part of the box is alsofitted a thumb-scrcw,j, for raising or lowering the pivotiron stafi'B Bis provided with spirit-levels 7c is, one at each end. The middle of theironstaif B1 is made circu lar, with a hole in it to go over and aroundthe spindle, and on the lower side a busluplate, m, is screwed to it, asshown in place in fig. 3, and detached in figs. 5 and 6. The bush-platem is surrounded by a collar, m,.in opposite sides of which areprojecting set-screws m m fig. 6, for moving it around the bush tocentre and plumb the spindle, and securing it fast to the hush-plate m,when required, as subsequently explained. The collar m rises a littleabove the face of the bush-plate m, and is provided on the inside withfour spurs or lugs 70 n n n, set-diametrically opposite each other, andwhich ride over the edge of the bush-plate, for the purpose of movingand bearing against the eccentric sides of four centre chucks orfollowers n n n n, which are piv= oted by screws s upon the face of thebush-plate 122. When the gauge-staff B B is placed upon the spindle tocentre and plumb it, by moving the collar around the bush-plate m, thelugs 1 bear against the eccentric followers n, and push them inward tillthey touch the spindle b. The staff B is then made fast to the spindle,so that the wooden part C shall clear the face of the millstone at itshighest points, by means of the sot-screws m while at the same time thepivot-pin z'is set upon the point of the spindle 6,and fixed in place bythe thumb-screwy. The followers 12. are covered with a plate, n seen infig. 3, to protect them. It will be seen that when the pivotcdgauge-stall has been centred upon the spindle of a bed-stone, asdescribed, the spindle may be made plumb by keying up in the usual way,the-spirit-lcvel la It being used f0 sliding upper pin 2' to adjust thespindle. The

r this purpose. And in case of a runner y be faced perfectly true byturny the wooden part, as usual, with the the gauge-staff being centredon a temporary or proof-spindle, the stone ma ing the stall on thc'pivot-pin z, the high places on the stone being marked b ordinary tram,and cut down until the face is smooth and level.

The work may always be tried by the iron proof-staff B, which is placedtrue on the face,

and the wooden staves C be kept perfectly true, by gauging them from thebottom of the iron proof-stat? B, which is a permanent and unchangeahleregulator.

Having described the construction and operation of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. The gauge-staff B, centred upon the millstone by means of thecircular centre fitting over and around the spindle 6, provided upon itsunder side with the bush-plate m, having the pivoted eccentric followers71,, and surrounded by adjustable collar m, with lugs 72, allconstructed and arranged as herein set forth.

2. The combination of the tram and gauge-staff B with the spirit-levelsK, substantially as herein shown and described for the purposespecified.

WALTER RING.

Witnesses JNo W. BRANGII, J. S. MEEK.

